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The Tektronix 155-0019-00 (M027) is a Tek-made decimal point and spacing control chip in a 16-pin DIP, designed by Les Larson.

It consists of a decade counter, digital-to-analog converter, and input logic, and is used in the 7000 series readout system to produce a positioning signal (10-level staircase), and also to position the decimal point.